I just copy and paste from the Chinese brand thread:
OK guys, please remember that these are initial impressions after using them for about five hours, keeping them in my ears for most of the time wink.gif
I've not made any direct comparison to other IEM's so far so all is from memory and I've only used them with my X3 so far.
The package is smaller than usual V-sonic packages and accessories are less than usual. There's three pairs of angle flange silicon tips, one foam pair and one double flange pair. The double flange suit me like a glove so that's what I've been using so far.
Build quality is very nice. I really like the way they look and although they're light to wear the still feel sturdy. The cable is also nice and doesn't seem to tangle a lot. Of course removable cables are a nice feature as well. I find the fit to be absolutely perfect for me and I don't miss the swiveling nozzle from the vds1 one single bit. They also fairly easy to drive, I'd say about average among the IEM's that I own.
The sound has great clarity and they offer a full sound without being dark or overly bassy. In all they seem pretty well balanced. The deepest bass is lacking a bit but they still dig pretty deep and I really don't miss any bass on them, but then again I'm no bass head. I don't detect any sibilance whatsoever and still they're not overly smooth like the Tenores either. I must say that these really hit the sweet spot for me and they sound equally great with every genre I've tested them with so far.
Still there's something strange about them and I really don't know how to explain this but in a way they sound a bit artificial. I don't know if you guys are familiar with class t-amps based on tripath chips? Anyway their sound reminds me a bit of the sound those anmpsm put out on speakers: a bit warm, very nice details and very (but not overly) smoth but to some people a bit artificial. Since I run all speakers in my house on tripath based amps this suits me just perfect but others might not like it as much as I do. I don't know if the last part made any sense but that's the best way I'm able to describe them.